Condensation products of substituted phenol sulfonic acid and formaldehyde

ABSTRACT

A dispersing agent which is (a) a condensation product of a substituted phenol sulfonic acid which is an arylphenol sulfonic acid or an aralkylphenol sulfonic acid with from about 0.5 to about 4 moles of formaldehyde per mole of substituted phenol sulfonic acid, or (b) a condensation product of (i) a substituted phenol sulfonic acid which is an arylphenol sulfonic acid or an aralkylphenol sulfonic acid and (ii) an aryl sulfonic acid with from about 0.5 to about 4 moles of formaldehyde per mole of substituted phenol sulfonic acid and aryl sulfonic acid wherein the weight ratio of substituted phenol sulfonic acid to aryl sulfonic acid is from about 0.95:0.05 to about 0.05:0.95. The dispersing agent may be used directly or reacted with a salt forming cation to obtain a salt. The condensation product is useful as a dispersing agent in hydraulic cement, mortar, concrete or the like.

CROSS REFERENCE TO RELATED APPLICATION

This application is a continuation-in-part of copending application U.S.Ser. No. 294,337--Papalos and Savoly, filed Aug. 19, 1981 now abandoned.

BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to condensation products of substituted phenolsulfonic acid and formaldehyde.

2. Description of the Prior Art

Condensation products of aromatic sulfonic acids and formaldehyde havefound widespread use as dispersing agents in numerous applications suchas in cement, concrete and the like.

U.S. Pat. No. 2,141,569--Tucker et al.--describes use of condensationproducts of certain aromatic sulfonic acids and formaldehyde asdispersing agents in cement and concrete.

U.S. Pat. No. 2,905,565--Dietz et al.--describes use of naphtholsulfonic acids and their condensates with cresol--formaldehyde resins toreduce water content in raw mix slurries in portland cement manufactureby the wet process.

U.S. Pat. No. 3,277,162--Johnson--describes preparation of condensationproducts of naphthalene-sulfonic acid and formaldehyde for use inoilwell cement.

U.S. Pat. No. 3,333,983--Sellet--describes preparation of aralkylphenolssuch as styrenated phenols by the alkylation of phenol with styrene.

SUMMARY OF THE INVENTION

A condensation product which is

(a) a condensation product of a substituted phenol sulfonic acid whichis an arylphenol sulfonic acid or an aralkylphenol sulfonic acid withfrom about 0.5 to about 4 moles of formaldehyde per mole of substitutedphenol sulfonic acid, and

(b) a condensation product of (i) a substituted phenol sulfonic acidwhich is an arylphenol sulfonic acid or an aralkylphenol sulfonic acidand (ii) an aryl sulfonic acid with from about 0.5 to about 4 moles offormaldehyde per mole of substituted phenol sulfonic acid and arylsulfonic acid wherein the weight ratio of substituted phenol sulfonicacid to aryl sulfonic acid is from about 0.95:0.05 to about 0.05:0.95.

If desired, the condensation product may be used directly or reactedwith a salt forming cation to obtain a salt. The condensation product isuseful as a dispersing agent in numerous applications such as inhydraulic cement, concrete or the like.

DETAILED DESCRIPTION

A useful condensation product may be prepared by sulfonating one mole ofone or more arylphenol or aralkylphenols with from about 1.0 to about8.0 moles of sulfuric acid at about 20° to about 100° C. to obtain asubstituted phenol sulfonic acid and then condensing one mole ofsubstituted phenol sulfonic acid with from about 0.5 to about 4 moles offormaldehyde at about 60° to about 120° C. to obtain the free acid ofthe condensation product. Likewise, an arylphenol sulfonic acid or anaralkylphenol sulfonic acid and an aryl sulfonic acid may be condensedwith from about 0.5 to about 4 moles of formaldehyde per mole ofarylphenol sulfonic acid, aralkylphenol sulfonic acid and aryl sulfonicacid wherein the weight ratio of arylphenol sulfonic acid andaralkylphenol sulfonic acid to aryl sulfonic acid is from about0.95:0.05 to about 0.05:0.95.

Substituted phenols include arylphenols and aralkylphenols having theformula ##STR1## wherein R is an aryl radical such as phenyl, diphenyl,naphthyl, hydroxymethylphenol or the like; R₁ is hydrogen or an alkylradical having from about 1 to about 5 carbon atoms such as methyl,ethyl, propyl, butyl, amyl or the like; R₂ is hydrogen or an alkylradical having from about 1 to about 5 carbon atoms such as methyl,ethyl, propyl, butyl, amyl or the like, n is from about 1 to about 3 andb is 0 or 1 are useful.

Useful arylphenols include 4-phenylphenol, 2-phenolphenol,2,4-diphenylphenol, 2,6-diphenylphenol, 4-naphthylphenol,2-naphthylphenol, 4-biphenylphenol, 2-biphenylphenol and the like.

Useful aralkylphenols include alpha-methyl benzyl paraphenol, abenzylphenol prepared by alkylation of phenol with styrene. Dibenzylatedand tribenzylated phenols prepared by alkylation of phenol with styrenemay also be used. Isopropylidenediphenol and like aralkylphenols may beused.

Sulfonation of arylphenols and aralkylphenols may also be accomplishedwith other sulfonating agents such as sulfuric acid, sulfur trioxide andthe like to obtain the desired substituted phenol sulfonic acid.

Useful arylsulfonic acids include sulfonic acid of the following arylhydrocarbons: benzene, methylbenzene, propylbenzene, isopropylbenzene,butylbenzene, dimethylbenzene, diethylbenzene, diisopropylbenzene,dibutylbenzene, naphthalene, methylnaphthalene, ethylnaphthalene,proylnaphthalene, butylnaphthalene, dimethylnaphthalene,diethylnaphthalene, dibutylnaphthalene, biphenyl, methylbiphenyl,ethyldiphenyl diisobutyldiphenyl, diphenylmethane, diphenylethane,diphenylpropane, diphenylbutene, and the like.

Formaldehyde used in the arylphenol sulfonic, aralkylphenol sulfonic andaryl sulfonic condensations may be in the form of 10 to 40% aqueoussolutions, 30 to 55% alcoholic solutions with alcohols such as methanol,ethanol, i-propanol, n-butanol or the like. Formaldehyde liberatingcompositions such as paraformaldehyde, trioxane or the like may be used.Compositions such as acetals which are capable of producing formaldehydemay also be used.

Salts of the condensation product may be prepared by neutralizing thefree acid of the condensation product with a salt forming base such asan alkali metal hydroxide, an alkaline earth hydroxide, or an organicamine base. Useful bases include sodium hydroxide, potassium hydroxide,lithium hydroxide, ammonium hydroxide, zinc hydroxide, aluminumhydroxide, barium hydroxide, calcium hydroxide, magnesium hydroxide andthe like. Useful organic amine bases include methylamine, diethylamine,triethanolamine, isopropanolamine and the like. Condensation products ofarylphenol sulfonic acids and aralkylphenol sulfonic acids may beprepared by

(a) sulfonating one mole of a substituted phenol such as an arylphenolor aralkylphenol with from about 1 to about 8 moles of a sulfonatingagent at about 20° to about 120 C. to obtain a substituted phenolsulfonic acid, then

(b) condensing the substituted sulfonic acid with from about 0.5 toabout 4 moles of formaldehyde at about 60° to about 120° C. to obtainthe free acid of the condensation product, and then optionally

(c) neutralizing the free acid of the condensation product with a baseto obtain a salt of the condensation product.

Condensation products of arylphenol sulfonic acids, aralkylphenolsulfonic acids and aryl sulfonic acids may be prepared by

(a) sulfonating one mole of a substituted phenol with about 1 to about 8moles of a sulfonating agent at about 20° to about 120° C. to obtain asubstituted phenol sulfonic acid, then

(b) adding aryl sulfonic acid to the substituted phenol sulfonic acid toobtain a mixture of substituted phenol sulfonic acid and aryl sulfonicacid wherein the weight ratio of substituted phenol sulfonic acid toaryl sulfonic acid is from about 0.95:0.05 to about 0.05:0.95, then

(c) condensing the mixture of substituted phenol sulfonic acid and arylsulfonic acid with from about 0.5 to about 4 moles of formaldehyde permole of mixture at about 60° to about 120° C. to obtain the free acid ofthe condensation product, and then optionally

(d) neutralizing the free acid of the condensation product with a baseto obtain a salt of the condensation product.

Free acids and salts of condensation products of substituted phenolsulfonic acid and aryl sulfonic acid with formaldehyde are useful asdispersants in cement and concrete when used at concentrations of fromabout 0.10 to about 10% based on weight of cement. They are particularlyuseful in reducing viscosity of high brine cement slurries when used atconcentrations of from about 0.10% to about 10% based on weight ofcement. These condensation products also act as friction reducers incement slurries and as superplasticizers in concrete mixes. They areparticularly useful as viscosity reductants in cement slurries made inbrine solutions. When these condensation products are added to concrete,they enhance the compressive strength of hardened concrete. Concrete isa hard, strong building material made by mixing cement, sand, gravel andwater. Water in the mixture causes the cement to set and bind the entiremixture in a hard mass. It is well known in concrete technology that thestrength--usually the compressive strength as measured by the ASTM testC39-72 is a reliable criterion of general quality. For this reason, thewhole technology of concrete is developed around obtaining a significantand practical strength with a minimum of cost, and a maximum ofconvenience in use. Despite extensive research, most of the concretepresently being used are simple mixtures of sand and coarse stonecontaining a minor proportion of portland cement with sufficient waterbeing added to produce a mixture fluid enough to place in forms.

It is well known in the art that, the less water used in concrete, thehigher the strength; considerable research has been directed todiscovering mixtures of different particle sizes of sand and stone whichwill give fluid concrete having minimum water content. When thesecondensation products are added to concrete mixes, they permit reductionin water content.

For a fuller understanding of the nature and advantages of thisinvention, reference may be made to the following examples. Theseexamples are given merely to illustrate the invention and are not to beconstrued in a limiting sense. All quantities, proportions andpercentages are by weight and all reference to temperature are °C.unless otherwise indicated.

EXAMPLE 1

This example describes preparation of a condensation product ofbenzylphenol sulfonic acid and formaldehyde.

I. Preparation of Benzylphenol Sulfonic Acid

    ______________________________________                                                             Mole-                                                                         cular           Molar                                    A. Composition of Reaction Mixture                                                                 Weight  Moles   Ratio                                    ______________________________________                                        9.46 grams styrenated phenol*                                                                          198     0.0477                                                                              1.0                                    14.30                                                                              grams sulfuric acid (20% SO.sub.3)**                                                              100     0.143 3.0                                    12.71                                                                              grams water added after                                                       sulfonation                                                              36.47                                                                              grams of reaction mixture                                                ______________________________________                                         *benzylphenol prepared by alkylating phenol with styrene                      **assigned molecular weight of H.sub.2 SO.sub.4                          

B. Procedure

Styrenated phenol was charged into a flask, equipped with stirrer,thermometer and ice bath. Sulfuric acid (20% SO₃) was then addeddropwise while maintaining the temperature at 25°-35° C. After all ofthe sulfuric acid was added, the reaction mixture was stirred at 25°-35°C. for an additional two hours. At the end of the two hour period, thereaction mixture was heated at 75°-80° C. for about one hour. A total of12.71 grams of water was then added to the reaction product at 75°-85°C. while controlling the temperature with external cooling.

II. Condensation of Benzylphenol Sulfonic Acid and Formaldehyde

A. Composition of Condensation Mixture

    ______________________________________                                        36.47    grams benzylphenol sulfonic acid from                                         Part I                                                               6.20     grams formaldehyde (37%)* (mole 0.0765)                              36.52    grams water                                                          20.81    grams ammonium hydroxide (28% NH.sub.4 OH)                           100.00   grams condensation product mixture                                   ______________________________________                                         *Molecular weight of 37% CH.sub.2 O = 81                                 

B. Procedure

The flask containing benzylphenol sulfonic acid from Part I was heatedto reflux conditions. Then the formaldehyde and water were added and thecondensation mixture was heated at 95±2° C. for 24 hours. At the end ofthis period, the condensation was terminated and the acid value of thefree acid condensation product of benzylphenol sulfonic acid andformaldehyde was determined. An acid value (AV) of 3.0 mgKOH/g wasobtained by titrating the condensation product with 0.5N sodiumhydroxide using phenolphthalein as the indicator. The free acidcondensation product was then neutralized with ammonium hydroxide at30°-40° C. until the pH of a 10% solution of the ammonium salt ofcondensation product was 7.0±0.5.

EXAMPLES 2 THROUGH 14

The procedures in Example 1 were followed using benzylphenol sulfonicacid obtained by sulfonation of one mole of styrenated phenol with threemoles of fuming sulfuric acid (20% SO₃), condensing the benzylphenolsulfonic acid with from 0.6 to 2.0 moles of formaldehyde per mole of thesulfonic acid and neutralizing the free acid condensation product withammonium hydroxide, sodium hydroxide or potassium hydroxide to preparethe desired salt. In Examples 6, 9, 10 and 11, calcium hydroxide wasused to precipitate unreacted sulfuric acid as calcium sulfate; theprecipitate was filtered off and the free acid condensation product inthe filtrate neutralized with ammonium hydroxide, sodium hydroxide orpotassium hydroxide. Additional data for Examples 1 through 14 are givenbelow.

    __________________________________________________________________________                   Molar Ratio                                                                           Gm of Conden-                                                                         Gm of Base                                     Example                                                                            Salt % Solids                                                                           CH.sub.2 O/RSO.sub.3 H                                                                sation Product                                                                        Used                                           __________________________________________________________________________    1    NH.sub.4                                                                           30   0.6     190     35 NH.sub.4 OH                                 2    NH.sub.4                                                                           30   0.9     197     34 NH.sub.4 OH                                 3    NH.sub.4                                                                           30   1.2     200     32 NH.sub.4 OH                                 4    NH.sub.4                                                                           31   1.6     212     56 NH.sub.4 OH                                 5    NH.sub.4                                                                           31   1.6     200     52 NH.sub.4 OH                                 6    *Ca/NH.sub.4                                                                       30   1.6     100     3.7                                                                              Ca(OH).sub.2                                                               12 NH.sub.4 OH                                 7    Na   30   1.6      60     14 NaOH                                        8    K    31   1.6      66     25 KOH                                         9    *Ca/Na                                                                             35   2.0     100     4.4                                                                              Ca(OH).sub.2                                                               18.5                                                                             NaOH                                        10   *Ca/K                                                                              35   2.0     100     4.4                                                                              Ca(OH).sub.2                                                               29.0                                                                             KOH                                         11   *Ca/NH.sub.4                                                                       35   2.0      83     3.6                                                                              Ca(OH).sub.2                                                               11.5                                                                             NH.sub.4 OH                                 12   Na   34   2.0     100     28 NaOH                                        13   K    34   2.0      73     73 KOH                                         14   Ca/Na                                                                              32   1.6     100     5.5                                                                              Ca(OH).sub.2                                                               12.0                                                                             NaOH                                        __________________________________________________________________________     *Calcium hydroxide was used to remove unreacted sulfuric acid.           

EXAMPLES 15 THROUGH 27

The procedures in Example 1 were followed using benzylphenol sulfonicacid obtained by sulfonating one mole of styrenated phenol with 2.5moles of fuming sulfuric acid (20% SO₃), condensing the benzylphenolsulfonic acid with from 0.6 to 2.0 moles of formaldehyde per mole of thesulfonic acid and neutralizing the free acid condensation product withsodium hydroxide, potassium hydroxide or zinc hydroxide. Additional dataon Examples 15 through 27 are given below.

    __________________________________________________________________________                   Molar Ratio                                                                           Gm of Conden-                                                                         Gm of Base                                     Example                                                                            Salt % Solids                                                                           CH.sub.2 O/RSO.sub.3 H                                                                sation Product                                                                        Used                                           __________________________________________________________________________    15   Na   34   1.2     150     36 NaOH                                        16   K    34   1.2     150     58 KOH                                         17   Zn   40   1.2     122     15 ZnO                                         18   Na   34   1.4     150     36 NaOH                                        19   K    34   1.4     150     58 KOH                                         20   Zn   40   1.4     164     20 ZnO                                         21   Na   34   1.6     150     39 NaOH                                        22   K    34   1.6     150     60 KOH                                         23   Zn   40   1.6     122     15 ZnO                                         24   NH.sub.4                                                                           34   0.9     148     26 NH.sub.4 OH                                 25   NH.sub.4                                                                           34   1.4     148     26 NH.sub.4 OH                                 26   NH.sub.4                                                                           34   1.6     148     26 NH.sub.4 OH                                 27   NH.sub.4                                                                           34   1.2     145     26 NH.sub.4 OH                                 __________________________________________________________________________

EXAMPLES 28 THROUGH 36

The procedures in Example 1 were followed using benzylphenol sulfonicacid obtained by sulfonating one mole of styrenated phenol with 2.25moles of fuming sulfuric acid (20% SO₃), condensing the benzylphenolsulfonic acid with from 0.6 to 2.0 moles of formaldehyde per mole of thesulfonic acid and neutralizing the free acid condensation product withsodium hydroxide, potassium hydroxide or zinc hydroxide. Additional dataon Examples 28 through 36 are given below.

    __________________________________________________________________________                   Molar Ratio                                                                           Gm of Conden-                                                                         Gm of Base                                     Example                                                                            Salt % Solids                                                                           CH.sub.2 O/RSO.sub.3 H                                                                sation Product                                                                        Used                                           __________________________________________________________________________    28   Na   34   1.6     150     36 NaOH                                        29   K    34   1.6     150     56 KOH                                         30   Zn   40   1.6     150     18 ZnO                                         31   Na   34   1.4     150     36 NaOH                                        32   K    34   1.4     150     56 KOH                                         33   Zn   40   1.4     150     18 ZnO                                         34   Na   34   1.2     150     36 NaOH                                        35   K    34   1.2     150     56 KOH                                         36   Zn   40   1.2     150     18 ZnO                                         __________________________________________________________________________

EXAMPLE 37

This example demonstrates use of condensation products of benzylphenolsulfonic acid and formaldehyde as dispersants in high brine-cementslurries. The ammonium salts of condensation products described inExamples 1 through 4 were used in 18% brine--API Class A cementslurries.

Slurries were prepared using 327 grams of 18% by weight sodium chloridesolution and 860 grams cement to obtain a total weight of 1,187 grams ora total volume of 600 ml of slurry. The slurries were prepared bypouring brine solution plus dispersant into the metal container of aWaring blender. While mixing at low speed, cement was added over a 15second period. Blender container was then capped and mixed at high speedfor 35 seconds.

Slurries were then poured into metal beakers and slurried for 20 minutesusing a direct drive mixer. The slurries were then transferred intosample viscosity cups of Fann viscometer Model No. 35. With theviscometer running at 600 rpm, the sample cups were raised up to theproper level and the viscosity readings were taken after 60 seconds ofcontinuous rotation.

Table I shows additional data of the condensation products, mole ratiosof CH₂ O/RSO₃ H used in preparations and viscosities of the highbrine-cement slurries.

                  TABLE I                                                         ______________________________________                                                           Mole Ratio  Slurry.sup.1 Viscosity                         Example                                                                              % Solids    CH.sub.2 O/RSO.sub.3 H                                                                    CP (600 RPM)                                   ______________________________________                                        Blank  (No Dispersant)                                                                           --          225                                            1      30          0.6         170                                            2      30          0.9         132                                            3      30          1.2         151                                            4      31          1.6         123                                            ______________________________________                                         .sup.1 Test conducted in 18% brinecement slurry at 2% dispersant based on     the weight of API Class A cement.                                        

EXAMPLE 38

The procedure in Example 37 was repeated using API Class H cementinstead of API Class A cement to obtain the results shown in Table IIbelow.

                  TABLE II                                                        ______________________________________                                                                Mole Ratio                                                                              Slurry Viscosity                            Example                                                                              Salt    % Solids CH.sub.2 O/RSO.sub.3 H                                                                  CP (600 RMP).sup.1                          ______________________________________                                         8     K       31       1.6       238                                         12     Na      34       2.0       236                                          7     Na      30       1.6       225                                         13     K       34       2.0       218                                         14     Ca/Na   32       1.6       207                                          4     NH.sub.4                                                                              31       1.6       203                                         ______________________________________                                         .sup.1 18% Brinecement slurry and 2% dispersant based on weight of cement     (type H).                                                                

EXAMPLE 39

The procedure in Example 37 was repeated using fresh water--API type Hcement slurry instead of high brine--API type H cement slurry and 0.56dispersant based on weight of cement to obtain the results given inTable III.

                  TABLE III                                                       ______________________________________                                                            Mole Ratio  Slurry Viscosity                              Example                                                                              % Solids     CH.sub.2 O/RSO.sub.3 H                                                                    CP (600 RMP)                                  ______________________________________                                        Blank  (No dispersant)                                                                            --          208                                           24     34           0.9         146                                           25     34           1.4         132                                           26     34           1.6         130                                           27     34           1.2         119                                           ______________________________________                                    

EXAMPLE 40

This Example demonstrates effectiveness of the condensation product ofbenzylphenol sulfonic acid and formaldehyde at various dispersantconcentrations with and without HEC (hydroxyethyl cellulose). Table IVshows results obtained with the condensation product of Example 8 withand without HEC.

                  TABLE I                                                         ______________________________________                                                        I      2      3      4                                        ______________________________________                                        A.  Without HEC % Dispersant                                                      Example No. 8      224     197  182  165                                  B.  With 0.1% by Wt. HEC                                                          Example No. 8     >300     224  108  110                                  ______________________________________                                    

EXAMPLE 41

This Example demonstrates the compression strength of an 18% brine--APItype H cement slurry containing the condensation product of Example 8.Data on compressive strengths were taken at seven days following theprocedure in ASTM standard C39-72. These results are shown in Table IV.

                  TABLE IV                                                        ______________________________________                                        Seven day compression strength of 18% brine-cement slurry.                               7 Day Compressive Strength                                         Example    (Average PSI)                                                      ______________________________________                                        Blank      2,417                                                              3          2,349                                                              4          2,531                                                              ______________________________________                                    

EXAMPLE 42

This Example demonstrates the compression strength of the condensationproducts of Examples 3 and 4 when tested as superplasticizers inconcrete. Concrete specimens were prepared following the procedure inASTM standard C192-76 and their compressive strengths were measured inASTM standard C39-72. Results from these tests are shown in Table V.

                  TABLE V                                                         ______________________________________                                               %       Mole Ratio  7 Day Compressive Strength                         Example                                                                              Solids  CH.sub.2 O/RSO.sub.3 H                                                                    (Average PSI)                                      ______________________________________                                        Blank  --      --          3,106                                              4      30      1.6         3,145                                              3      31      1.2         3,300                                              ______________________________________                                    

EXAMPLES 43 THROUGH 46

The procedures in Example 1 were followed using benzylphenol sulfonicacid obtained by sulfonation of one mole of styrenated phenol with 3moles of fuming sulfuric acid (20% SO₃), condensing the benzylphenolsulfonic acid with 1.6 moles of formaldehyde per mole of sulfonic acidand neutralizing the free acid condensation product with magnesiumhydroxide, calcium hydroxide, monoethanol amine and aluminum acetatetetrahydrate. The results from these tests are shown in Table VI.

                  TABLE VI                                                        ______________________________________                                        Ex-                                                                           am-             %       Gm of Conden-                                                                           Gm of Base                                  ple  Salt       Solids  sation Product                                                                          Used                                        ______________________________________                                        43   Mg         32      155.0     14.5 Mg(OH).sub.2                           44   Ca         20      155.0     18.5 Ca(OH).sub.2                           45   monoethanol                                                                              42      155.0     30.5 MEA                                         amine                                                                    46   Al         29       92.6     14.6 Al.sub.2 O--                                                 (C.sub.2 H.sub.3 O.sub.2).sub.4..sub.4 H.sub.2          ______________________________________                                                              O                                                   

EXAMPLE 47 Condensation Products of Monobenzylated Phenol Sulfonic Acidwith Formaldehyde and Neutralized with Potassium Hydroxide

Procedure

A. Sulfonation

A one liter reaction flask, equipped with stirrer, thermometer and icebath, was charged with 100 grams of monobenzylated phenol (monostyrenated phenol having a molecular weight of 198), then 166 grams ofH₂ SO₄ (20% SO₃, 3.33 moles)* was added slowly at 30°-40° C. over aperiod of two hours. After all acid was added, the reaction was stirredfor an additional two hours. It was then heated at 75°-80° C. for onehour. Then 144.0 grams of water was added at 70°-80° C.

B. Polymerization and Neutralization

A similar reactor as described in Part A, was charged 200 grams (0.244mole) of sulfonation product, 31.6 grams of 37% formaldehyde (0.390mole) and 200 grams of water. The reaction was then heated at 95° C. fortwenty-four hours. At the end of this period, the product was cooled toroom temperature and an acid value of 179 was measured usingphenolphthalein as the indicator. Based on this acid value, 200 grams offree acid was neutralized at 30°-40° C. with 80 grams of 45% KOH. Theresulting polymer was 31% potassium salt with a pH of 7.5 (10%solution).

EXAMPLE 48 Condensation of Dibenzylated Phenol Sulfonic Acid withFormaldehyde and Neutralized with Potassium Hydroxide

A. Sulfonation

In a similar reactor as described in Example 47, there was charged 100grams (0.342 mole) of dibenzylated phenol (distyrenated phenol). Therewas added 114.0 grams H₂ SO₄ (20% SO₃, 3.33 moles) over a period of twohours at 50°-60° C. The reaction was stirred another two hours at50°-60° C. It was then heated at 75°-80° C. for two hours. After this,116.0 grams of water was added at 70°-80° C.

B. Polymerization and Neutralization

In an identical reactor as described in Example 47, was charged 200grams (0.207 mole) of the sulfonation product, 27.0 grams of 37%formaldehyde (0.332 mole) and 200 grams of water. The reaction was thenheated at 95° C. for twenty-four hours. At the end of this period, itwas cooled to room temperature and an acid value of 140 was measuredusing phenolphthalein as the indicator. Based on this acid value, 200grams of the free polymer was neutralized with 62 grams of 45% KOH at30°-40° C. The neutralized product was 31% potassium salt with a pH of7.5 (10% solution).

EXAMPLE 49 Condensation of Tribenzylated Phenol (64%) and DibenzylatedPhenol (34%) Sulfonic Acids with Formaldehyde and Neutralized withPotassium Hydroxide

A. Sulfonation

In a similar reactor as described in Example 47, there was charged 50grams (0.124 mole; molecular weight 403, based on hydroxyl number of theblend) of tri and dibenzylated phenols prepared by alkylating phenolwith styrene to the indicated degree of substitution. There was added74.4 grams H₂ SO₄, (20% SO₃, 0.744 mole) at 25°-45° C. over a period oftwo hours. The reaction was stirred another two hours at 45° C. It wasthen heated at 75°-80° C. for forty-five minutes. Then 67.0 grams ofwater was added at 70°-80° C.

B. Polymerization and Neutralization

In a similar reactor as described in Example 47, there was charged 177grams (0.115 mole) of the sulfonation product; 18.6 grams of 37%formaldehyde (0.230 mole) and 177.0 grams water. The reaction was thenheated at 95° C. for twenty-four hours. It was then cooled to roomtemperature and an acid value of 173.6 was measured usingphenolphthalein as the indicator. Based on this acid value, 300 grams ofthe free acid was neutralized with 116 grams of 45% KOH. The finishedproduct was 31% potassium salt with a pH of 7.0 (10% solution).

EXAMPLE 50

The procedure in Example 37 was repeated using API Class H cementinstead of API Class A cement. The results of this test are shown inTable VII.

                                      TABLE VII                                   __________________________________________________________________________    72% Cement (H) in 18% Brine Slurry at                                         1% of Dispersant Based on Cement (H)                                                            Mole Ratio                                                                            Slurry Viscosity                                    Example                                                                            Salt    % Solids                                                                           CH.sub.2 O/RSO.sub.3                                                                  CPS (600 RPM) 25° C.                         __________________________________________________________________________    47   K       31   1.6     174                                                 48   K       31   1.6     130                                                 49   K       31   2.0     193                                                 Blank                                                                              (no dispersant)      off scale 300                                       __________________________________________________________________________

EXAMPLE 51

The procedure in Example 37 was repeated using API Class H cementinstead of API Class A cement in fresh water cement slurries. The resultof the polymers tested are listed in Table VIII.

                                      TABLE VIII                                  __________________________________________________________________________    72% Cement H in Fresh Water at                                                1% of Dispersant on Weight of Cement                                                            Mole Ratio                                                                            Slurry Viscosity                                    Example                                                                            Salt    % Solids                                                                           CH.sub.2 O/SO.sub.3 H                                                                 CPS (600 RPM) 25° C.                         __________________________________________________________________________    44   Ca      20   1.6      97                                                 45   monoethanol                                                                           42   1.6     130                                                      amine                                                                    Blank                                                                              no dispersant        141                                                 __________________________________________________________________________

EXAMPLE 52 Condensation Product of 4', 4-Isopropylidenediphenol SulfonicAcid with Formaldehyde and Neutralized with Potasssium Hydroxide

A. Sulfonation

In a similar reactor as described in Example 47, there was charged 73.0grams H₂ SO₄ (20% SO₃, 0.730 mole). Then 50 grams of4',4-isopropylidenediphenol (0.219 mole) was added slowly at roomtemperature. The reaction's exotherm raised the temperature at 70°-80°C. where all the 4',4-isopropylidenediphenol was added. The reaction wasthen heated at 110° C. for 3.0 hours. Then 123.0 grams of water wasadded, under reflux, and the sulfonation product was cooled to roomtemperature.

B. Polymerization and Neutralization

In a similar reactor as described in Example 47, there was charged 100grams (0.089 mole) of the sulfonation product (A), 7.2 grams 37%formaldehyde (0.089 mole) and 63.0 grams of water. The reaction was thenheated at 95° C. for twenty-four hours. It was then cooled to roomtemperature and an acid value of 140 was measured using phenolphthaleinas the indicator. Based on this acid value, 150 grams of the acid wasneutralized with 50 grams of KOH (45%). The resulting product was 30%potassium salt with a pH of 7.6 (10% solution).

EXAMPLE 53

The procedure in Example 37 was repeated using API Class H cementinstead of API Class A cement in fresh water cement slurries. The resultof the products tested are listed in Table IX.

                                      TABLE IX                                    __________________________________________________________________________    72% Cement H in Fresh Water at                                                0.56% of Dispersant on Weight of Cement                                                         Mole Ratio                                                                            Slurry Viscosity                                    Example                                                                            Salt    % Solids                                                                           CH.sub.2 O/RSO.sub.3 H                                                                CPS (600 RPM) 25° C.                         __________________________________________________________________________     1   K       30   4.0     130                                                 52   K       32   1.0     129                                                 Blank                                                                              (no dispersant)      141                                                 __________________________________________________________________________

EXAMPLE 54

The procedure in Example 37 was repeated except 0.86 gram (0.1%hydroxyethyl cellulose, HEC) based on weight of cement was added to the18% brine/cement slurry. The result of the product tested is shown inTable X.

                  TABLE X                                                         ______________________________________                                                   % Dispersant                                                       Example I    3          4                                                     ______________________________________                                        without HEC  182        165 cps at 600 rpm                                    with 0.1% HEC                                                                              108        100 cps at 600 rpm                                    blank (no dispersant) - off scale 300                                         ______________________________________                                         Note:                                                                         That viscosity was much lower when HEC was present in the slurry as a         fluid loss additive. Carboxymethylcellulose (CMC), polyacrylamide (PAM) o     carboxymethylhydroxyethylcellulose (CMHEC) may be substituted for HEC.   

EXAMPLE 55 Condensation Product of p-Phenylphenol Sulfonic Acid withFormaldehyde and Neutralized with Potassium Hydroxide

A. Sulfonation

In a similar reactor as described in Example 47, there was charged 97.9grams H₂ SO₄ (20% SO₃, 0.979 mole). Then 50 grams of p-phenylphenol(0.294 mole) was added slowly at room temperature. The exotherm from thereaction raised the temperature at 70°-80° C. where all p-phenylphenolwas added. The reaction was then heated at 110° C. for 3.5 hours. Then145.0 gram of water was added, under reflux, and the product cooled toroom temperature.

B. Polymerization and Neutralization

In a similar reactor as described in Example 47, there was charged 100grams (0.100 mole) of the sulfonation product, 8.9 grams 37%formaldehyde (0.110) mole and 51.0 grams of water. The reaction was thenheated at 95° C. for twenty-four hours. It was then cooled to roomtemperature and an acid value of 190.4 was measured usingphenolphthalein as the indicator. Based on this acid value, 140 grams ofthe acid was neutralized with 58 grams of 45% KOH. The final product was31% potassium salt with a pH of 8.0 (10% solution).

EXAMPLE 56 Condensation Product of p-Phenylphenol Sulfonic Acid andNaphthalene Sulfonic Acid with Formaldehyde and Neutralized withPotassium Hydroxide

Polymerization and Neutralization

In a similar reactor as described in Example 47, there was charged 50grams of sulfonation product of Example 55; (0.0645 mole), 30.7% gramsnaphthalene sulfonic acid (0.1290 mole) and 18.8 grams of 37%formaldehyde (0.232 mole) and 11.0 grams water at 60° C. The reactionmixture was then heated to reflux (103° C.) for twenty-four hours. Itwas then cooled to room temperature and an acid value of 151.2 wasmeasured using phenolphthalein as the indicator. Based on this acidvalue, 189 grams of the acid was neutralized with 64 grams of 45% KOH.The final product was 33% potassium salt with a pH of 8.0 (10%solution).

EXAMPLE 57 Condensation Product of Styrenated Phenol Sulfonic Acid andNaphthalene Sulfonic Acid with Formaldehyde and Neutralized withPotassium Hydroxide

Polymerization and Neutralization

In an identical reactor as described in Example 47, there was charged 30grams of sulfonation product of Example I (0.0355 mole) and 8.45 gramsnaphthalene sulfonic acid (0.0355 mole) 6.9 grams 37% formaldehyde and38.0 grams water at 60° C. The sulfonation product was styrenated phenolsulfonic acid of Example I which contained 80% monostyrenated and 20%distyrenated phenols. The reaction mixture was then heated to reflux(105° C.) for twenty-four hours. It was then cooled to room temperatureand an acid value of 168 was determined using phenolphthalein as theindicator. Based on this acid value, 81 grams of the acid wasneutralized with 29 grams of 45% KOH. The resulting polymer was 33%potassium salt with a pH of 8.5 (10% solution).

EXAMPLE 58 Condensation Product of p-Phenylphenol Sulfonic Acid andXylene Sulfonic Acid with Formaldehyde and Neutralized with PotassiumHydroxide

A. Sulfonation and Polymerization of Xylene Sulfonic Acid

In a similar reactor as described in Example 47, there was charged 106grams of xylene (1.0 mole). There was added with fast stirring, 150grams of fuming H₂ SO₄ (20% SO₃) at 20°-40° C. over a period of twohours. Next, the reaction was heated at 90°-95° C. for 2.25 hours. Itwas then cooled to room temperature and 138.0 grams of water was addedat 30°-40° C. Then to 200 grams of sulfonation product (0.508 mole) wasadded 20.5 grams of 37% formaldehyde (0.254 mole) and heated to reflux(110° C.) for eight hours. At the end of this period, all formaldehydewas reacted as determined via standard Na₂ SO₃ titration procedure.

B. Condensation of Xylene Sulfonic Acid and p-Phenylphenol Sulfonic Acidwith Formaldehyde and Neutralization with Potassium Hydroxide

In a similar reactor as described in Example 47, there was charged 50grams (0.645 mole) of sulfonation product of Example 55 (A), 56 grams(0.0645 mole) of sulfonation product of Example 58 (A), 12.5 (0.155mole) of 37% formaldehyde and 76 grams of water. The reaction mixturewas then heated to reflux (103° C.) for twenty-four hours. It was thencooled to room temperature and an acid value of 196 was measured usingphenolphthalein as the indicator. Based on this acid value, 192.5 gramsof the copolymer acid was neutralized with 83.8 grams of 45% potassiumhydroxide. The final product was 33% potassium salt with a pH of 8.5(10% solution).

EXAMPLE 59 Condensation of Xylene Sulfonic Acid and Distyrenated PhenolSulfonic Acid with Formaldehyde and Neutralized with Potassium Hydroxide

A. Sulfonation of Distyrenated Phenol

In a similar reactor as described in Example 47, there was charged 100grams (0.325 mole) of distyrenated phenol (mol. wt. 308, based on OHvalue). There was added, with fast stirring, 146 grams (1.461 mole) offuming H₂ SO₄ (20% SO₃) at 50°-60° C. over a two hour period. Thereaction continued at 60° C. for an additional two hours and at 95° C.for one hour. Then 132.6 grams of water was then added at 80°-90° C. andthe reaction was cooled to room temperature.

B. Polymerization and Neutralization

In a similar reactor as described in Example 47, there was charged 75grams of the sulfonation product of Example 59 (A) (0.0644 mole) and55.90 grams of the sulfonation product of Example 58 (A) (0.0644 mole),12.5 grams of 37% formaldehyde (0.1547 mole) and 100 grams of water. Thereactants were then heated to reflux (103° C.) for twenty-four hours. Itwas then cooled to room temperature and an acid value of 180 wasmeasured using phenolphthalein as the indicator. Based on this acidvalue, 192.5 grams of free acid polymer was neutralized with 76.95 gramsof 45% KOH. The resulting polymer was 34% potassium salt with a pH of8.0 (10% solution).

EXAMPLE 60

The procedure in Example 37 was repeated using API Class H cement in 18%brine/cement slurry. The result of all products tested are listed inTable XI.

                  TABLE XI                                                        ______________________________________                                        72.5% Cement (H) in 18% Brine Slurry at                                       1% of Dispersant Based on Cement (H)                                          Ex-                                                                           am-                  Mole Ratio                                                                              Slurry Viscosity                               ple  Salt   % Solids CH.sub.2 O/RSO.sub.3 H*                                                                 CPS (600 RPM) 25° C.                    ______________________________________                                        55   K      31       1.0       166                                            56   K      33       1.2       184                                            57   K      33       1.0       189                                            58   K      33       1.2       178                                            59   K      34       1.2       180                                            ______________________________________                                         *Mole ratio of formaldehye is based on the sum of the sulfonated monomers                                                                              

While the invention has been described with reference to certainspecific embodiments thereof, it is understood that it is not to be solimited since alterations and changes may be made therein which arewithin the full and intended scope of the appended claims.

What is claimed is:
 1. A condensation product and salts thereof selectedfrom the group consisting of(a) condensation product of a substitutedphenol sulfonic acid selected from the group consisting of an arylphenolsulfonic acid and an aralkylphenol sulfonic acid with from about 0.5 toabout 4 moles of formaldehyde per mole of substituted phenol sulfonicacid, and (b) condensation product of (i) a substituted phenol sulfonicacid selected from the group consisting of an arylphenol sulfonic acidand an aralkylphenol sulfonic acid and (ii) an aryl sulfonic acid withfrom about 0.5 to about 4 moles of formaldehyde per mole of substitutedphenol sulfonic acid and aryl sulfonic acid wherein the weight ratio ofsubstituted phenol sulfonic acid to aryl sulfonic acid is from about0.95:0.05 to about 0.05:0.95.
 2. The condensation product of claim 1wherein the substituted phenol sulfonic acid has from about 1 to about 8sulfonic acid groups.
 3. The condensation product of claim 1 having asubstituted phenol of formula ##STR2## wherein R is an aryl radical,R₁is hydrogen or an alkyl radical having from about 1 to about 5 carbonatoms, R₂ is hydrogen or an alkyl radical having from about 1 to about 5carbon atoms, n is from 1 to 3, and b is from 0 to
 1. 4. The salt of thecondensation product of claim 1 wherein a salt forming cation isselected from the group consisting of sodium, potassium, lithium,ammonium, zinc, calcium, barium, magnesium, aluminum, methylamine,monoethanolamine, diethanolamine, triethanolamine and isopropanolamine.5. The potassium salt of the condensation product of claim 1 wherein onemole of aralkylphenol is sulfonated with 3 moles of sulfonating agent toobtain aralkylphenol sulfonic acid and one mole of the aralkylphenolsulfonic acid is then condensed with 1.8 moles of formaldehyde.
 6. Thesodium salt of the condensation product of claim 1 wherein one mole ofaralkylphenol is sulfonated with 3 moles of sulfonating agent to obtainaralkylphenol sulfonic acid and one mole of the aralkylphenol sulfonicacid is then condensed with 1.4 moles of formaldehyde.
 7. The ammoniumsalt of the condensation product of claim 1 wherein one mole ofaralkylphenol is sulfonated with 3 moles of sulfonating agent to obtainaralkylphenol sulfonic acid and one mole of the aralkylphenol sulfonicacid is then condensed with 1.2 moles of formaldehyde.
 8. Thecondensation product of claim 1 wherein the aralkylphenol sulfonic acidis monobenzylphenol sulfonic acid.
 9. The condensation product of claim1 wherein the aralkylphenol sulfonic acid is dibenzylphenol sulfonicacid.
 10. The condensation product of claim 1 wherein the aralkylphenolsulfonic acid is tribenzylphenol sulfonic acid.
 11. The condensationproduct of claim 1 wherein the aralkylphenol sulfonic acid isisopropylidenediphenol sulfonic acid.
 12. The condensation product ofclaim 1 wherein the aryl phenol sulfonic acid is phenylphenol sulfonicacid.
 13. The condensation product of claim 1 wherein the aryl sulfonicacid is naphthalene sulfonic acid.
 14. The condensation product of claim1 wherein the aryl sulfonic acid is xylene sulfonic acid.